Did you know that Australia had its own version of the Bletchley Park signals and cipher intelligence unit? No? Neither did I, until I read this new historical fiction by Australian author Alli Sinclair. Set in Queensland during WWII, it tells the story of the women and men who worked in a top secret organisation called Central Bureau.

People were recruited from all walks of life. They needed level heads, problem solving skills, as well as an aptitude for mathematics, patterns, languages, commitment to the war effort and – of course – the ability to keep secrets. They all signed an official secrets act, which meant they could never talk about the work they did. Not to family, friends…anyone.

I’ve often wondered how people who work in these sorts of roles, or in intelligence services more generally, manage to keep their working lives separate from the rest of their personal lives. For most people, work is such a big part of life and to keep it secret… well, I think it would be almost impossible.

What I especially liked about The Codebreakers is that this aspect of their role is not avoided. In fact, the secrecy requirements and the difficulties this posed for women forms a key part of the story.

Added to this is the portrayal of the other factors at play. The women recruited to Central Bureau were young, they lived in barracks and worked together every day, in a garage at the back of a mansion in a Brisbane street (most of the men worked inside the house itself). The women were dubbed ‘The Garage Girls’, and they formed strong bonds as a result of their experiences.

Brisbane during WWII is portrayed brilliantly – the heady atmosphere of wartime; fear of imminent Japanese invasion; grief and heartache at the loss of loved ones killed in action; conflict between Australian and American servicemen; rationing; the quick courtships and impulsive marriages that sometimes happened; living with continual uncertainty and anxiety. It’s easy for us today, knowing what we know now, to forget that at the time, Australians did not know what the outcome would be. Reading this novel I found it easy to imagine how it would have felt, living with the possibility that Japanese soldiers might well arrive on the shores of northern Australia.

The other aspect of the novel that is very convincing is the portrayal of how it felt for Australians, once peace was declared. Of course there was elation, joy, relief. For some, there was also sadness and a sense of let-down. We can understand that for the women in Central Bureau, their employment ceased almost immediately. They were expected to return to hearth and home, making way for the men as they returned from the services. The aftermath of war is not always easy, and they had to exchange the exciting, demanding, important work they had been doing, for more mundane roles at home or in jobs seen as suitable for women.

Shadowed by the mansion at Nyrambla, this little garage had been the centre of her world for two and a half years. Its walls had witnessed the women handling some of the war’s most top-secret messages and ensuring they got into the right hands at Bletchley Park, Arlington Hall and countless outposts around the world. The messages they’d decrypted and encrypted had saved lives and helped the troops come back to their loved ones. All this happened under the roof of a regular-looking garage in suburban Brisbane and no one outside Central Bureau would ever be the wiser.

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If you enjoy finding out about lesser known aspects of Australian life during WWII – and particularly the more unusual roles performed by some women – you’ll love The Codebreakers. There is a light touch of romance in the story, though the main themes are to do with friendship, courage and the many ways in which lives are changed by war.

The Codebreakers is published by HarperCollins Australia in March 2021.
My thanks to the publishers for a review copy.